Rep. David Schweikert, R-Ariz., makes a point during a House Ways and Means Committee hearing on Capitol Hill in Washington. Arizona Democrats are targeting one of four solidly Republican U.S. House districts with a polished candidate who has a big fundraising edge against the GOP incumbent. Although the party makeup of Arizona’s congressional delegation has been remarkably stable for the past decade, Democrats hope to change that this year with Dr. Hiral Tipirneni, who is challenging five-term Schweikert in the suburban 6th District that takes in much of north Phoenix, Paradise Valley, Scottsdale and Fountain Hills. (AP Photo/J. Scott Applewhite, File)